I roto i te taiao tūturu o te mākete, ka taea te kī he mea whakamiharo ngā momo paura rapa. Nō reira, ki te kore he tohunga hangarau ngaio, he taputapu whakamātautau rānei a te kaiwhakamahi, ka taea anake e ngā kaihokohoko tinihanga maha o te mākete te tinihanga i a ia. I tēnei wā, kei reira ētahi tikanga kimi e horapa ana i runga i te Ipurangi, pērā i: te tirotiro i te pōuri o te wairewa me te āhua hanga kiriata. He mōhiotanga noa iho ēnei tikanga mai i te mata, ā, kāore e taea te tautoko i te tikanga pūtaiao mō te whakatau whakamutunga a te kaiwhakamahi mēnā he pai te hua mōna. Nō reira, i roto i tēnei tuhinga, ka whakatairangahia e mātou ētahi ariā taketake o te paura rapa mō te kore utu mai i ngā āhuatanga o te hanganga rauemi mata taketake, ngā āhuatanga, me te kaupapa o te whakamahinga o te paura rapa, kia taea ai e ngā hoa mahi te whakatau i te mea pai me te mea he hapa.
Tuatahi, he ariā taketake hei mārama ki te hanga o te paura pūmua marara tūturu. (Ko te paura rapa marara anō he paura pūmua me ngā āhuatanga marara anō ka whakarerekētia mai i te whakapūtanga kapia hangai mā te tāpiri i ētahi atu matū ka whakamarokehia. Ina whakamahia te wai hei reo marara, ka taea te hanga i te whakapūtanga, ā, he paura pūmua marara anō. Marara anō He paura mā te nuinga o te wā he paura mā, engari he iti noa iho he tae kē.) Me whakauru te paura rapa marara anō: te kapia pūmua, ngā tāpiri, te colloid tiaki, te kaihoko ārai-whakakoi. 1. Kei roto i te pūtake o ngā matūriki paura rapa te kapia pūmua, ā, koia hoki te wāhanga matua o te paura rapa marara anō, pērā i te polyvinyl acetate/vinyl resin, me ētahi atu. Ko te kounga o te whakapūtanga polyvinyl acetate i hangaia e ngā kaihanga rerekē me ngā tukanga rerekē ka pā tika ki te kounga o te paura rapa i hangaia. Hei whakarite i te pumau o te kounga hua, ko ngā wheketere nui noa e whakamahi ana i tētahi waitohu polyvinyl acetate hei hanga paura pūmua marara anō. I konei ka taea e tātou te tango i tētahi tauira mahi. I te tau 2015, i whakakapia te paura polyvinyl acetate iti te utu e tētahi waitohu rongonui o te paura rapa o te motu, hei whakaputa paura polymer ka taea te whakamarara anō nā runga i ngā take whakahaere. Nā reira, i puta ai ngā rerekētanga kounga nui, ā, i puta ai he kino kāore e taea te whakatika. Ahakoa ētahi kaihokohoko nanakia i konei ka whakamahi i te rapa mā me ērā atu mea pērā hei utu mō te puehu.
2. Ka mahi tahi ngā tāpiringa (ā-roto) me te kapia hei whakarerekē i te kapia, hei tauira, he mea hanga kirihou e whakaiti ana i te pāmahana hanga kiriata o te kapia (ko te tikanga kāore e hiahiatia he mea hanga kirihou mō ngā kapia vinyl acetate/ethylene copolymer), ehara i te mea he tāpiringa kei roto i ngā Paura rapa katoa. Ko te paura rapa ka taea te whakamarara anō o te maha o ngā kaihanga iti he tohu pāmahana hanga kiriata anake, ā, kāore e taea te kī ko te pāmahana whakawhiti karāhe, he tawhā nui hoki tēnei mō te kounga o te paura rapa tonu.
3. Koroiti tiaki He paparanga rauemi wai-aro e takai ana ki te mata o ngā matūriki paura rapa ka taea te whakamarara anō, ā, ko te tinana tiaki o te nuinga o ngā paura rapa ka taea te whakamarara anō ko te waipiro polyvinyl. Ko te waipiro polyvinyl i konei hei whakauru tahi ki te tukanga whakamaroke rehu, kaua ki te whakaranu noa. Anei tētahi atu raruraru noa i te mākete. He maha ngā awheawhe iti e kī ana kei te hanga paura rapa e mahi ana i tētahi tukanga whakaranu ā-tinana. Kāore e taea te kī ko tēnei hua he paura polymer ka taea te whakamarara anake.
4. Ngā Tāpiri (o waho) Ngā rauemi i tāpirihia hei whakawhānui ake i te mahi a ngā paura rapa ka taea te whakamarara anō, pērā i te tāpiri i ngā superplasticizer ki ētahi paura rapa wai. Pērā i ngā tāpiringa o roto, kāore e whakamahia ana ngā momo paura polymer ka taea te whakamarara anō katoa. Kei roto katoa i ngā paura rapa tēnei tāpiringa.
5. Ārai-whakakorikori He whakakī kohuke pai, e whakamahia ana hei ārai i te paura rapa mai i te kohikohi i te wā rokiroki me te kawe, hei whakahaere hoki i te rere o te paura rapa (i makahia mai i ngā putea pepa, i ngā tāke rānei). Ko tēnei whakakī anō hoki te wāhanga ka pā nui ki te utu whakaputa me te whai huatanga o te paura pūmua marara. He maha ngā paura rapa utu iti kei te mākete e whakanui ana i te ōwehenga whakakī hei whakaiti i ngā utu. Ki te kī noa, ko te tohu o te nui o te pungarehu te mea e kōrerohia ana. Ko ngā whakakī rerekē e tāpirihia ana e ngā kaihanga rerekē ka pā anō ki te pānga whakaranu o te paura rapa me te sima. Nā te mea ka tutuki te hononga o ngā piri kore-waro ki ngā rauemi mā te kaupapa o te whakauru miihini.
Wā tuku: Paenga-whāwhā-26-2024